Before I start searching for 3 KVA pole pigs I will ask here. I have
a UTC LS-184, a beautiful transformer from the 1950s, weighs 102 lbs.
It is 7 kV RMS CT. With a choke input, it would do a 3 kV DC 500 mA
supply all day long, according to UTC. I need ~ 4 kV at 0.6 - 0.8
Amps. If I ran it into a capacitor only, and it charged up to near
peak, it should do the voltage fine. However, I am not certain how
much current derating it would need for running into a Capacitive
load.
Does anyone have a single phase plate transformer, which has 220/240
primary and good for ~4 kV DC @ 0.6-0.8 Amps? I would prefer to us a
full wave bridge but two diodes and a center tapped pig would work
too. I just found a 4.1 kV @ 2 Amp today at a junk yard in town, but
it has 480 VAC primary, and is LARGE. I have several pieces for 3 kV
DC supplies, but nothing for a higher voltage tube. Numerous
broadcast transmitters and RF industrial generators used such power
in the good old days.
There were some very nice 3 kVA 4160VAC/220 dry distribution
transformers made by Westinghouse years back, before ABB bought them,
and they outsourced to China. Into a choke, they would be fine. I am
not planning on using this for SSB.
Thank you.
73
John
K5PRO
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